Community calendar for Friday, Nov. 23, 2012

Friday

Pinnacle Possibilities for Teens 3 to 6 p.m., Matt Garcia Learning Center, 230 Atlantic Ave., Fairfield. For ages 12 to 18. Helping teens to cultivate self-expression through exposure to art, entertainment and professional guest speakers. Classes in yoga and different styles of dance will be taught. Info: 430-8493 or www.pinnaclepossibilitiesforteens.com.

Holiday Open House and Tree Lighting 6:30 p.m. Nov. 30, at the foot of First Street, Benicia. Tree lighting and music by Kris Kringle and The Mistletones. Info: 745-9791.

Vanden High Sack Attack Competition 9 a.m. to 5 p.m. Dec. 1, Vanden High School, 2951 Markely Lane, Fairfield. Twenty-five teams of robot-building students put their skills to the test in a series of robot challenges against teams from other schools. Info: www.vexrobotics.com, www.robotevents.com.